Sean Yates wore the yellow jersey in the 1994 Tour de France and later went on to coach. Photograph: Pascal Rondeau/Getty Images

Sean Yates has resigned from his job as directeur sportif with Team Sky after being interviewed as part of the team's zero tolerance policy on doping, according to reports.

Yates coached Bradley Wiggins to victory in this year's Tour de France, but in his career as a rider he tested positive in 1989. He rode alongside Lance Armstrong in the Motorola team in the 1990s and coached the American in 2005 and 2009.

The British team's general manager Dave Brailsford interviewed Yates and asked him about any involvement in doping as part of a series of discussions with all members of staff and it was after this that Yates resigned, according to the Sunday Telegraph. Yates has denied any involvement in doping programmes and was at no point mentioned in the US Anti-Doping Agency report that revealed the extent of Armstrong's doping.